/Engine/Source/Editor/UnrealEd/Classes/Editor/EditorEngine.h
Callback when script execution starts, might switch world
void OnScriptExecutionStart ( const struct [FBlueprintContextTracker](API\Runtime\CoreUObject\UObject\FBlueprintContextTracker) & ContextTracker, const [UObject](API\Runtime\CoreUObject\UObject\UObject) * ContextObject, const [UFunction](API\Runtime\CoreUObject\UObject\UFunction) * ContextFunction )